Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0cc0369583c496…

MALICIOUS

PDF

44.5 KB Created: 2021-05-30 23:59:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 272e5dec3398bac0873772b6f1283600 SHA-1: 6ae8c3f68d29ef14d38ade916dbaae8dd785e532 SHA-256: 7e0cc0369583c4968740d394121f1b1fbd40572a948ff1fd568b2c621e8b7f4b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, including one identified as a malicious redirector leading to a 'free game hack' lure. The document body and heuristics suggest a social engineering tactic to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a high likelihood of further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9519

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/479516143/minecraft-realms-free-game-hack In PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/free-views-tiktok_GM835599320.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/is-tiktok-free_GM835599320.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/free-tiktok-app_GM835599320.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://www.freenom.comHeyIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ad7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD7 24492 bytes
SHA-256: 591509955bb4a3d19d551b742b87f9210284017097f1dceeecbd5b24ec69594a
font_01_sfnt_off00008317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8317 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off00008cb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB7 17900 bytes
SHA-256: badbc394cd8954733b164be5cc8c6ff402afbb9d7774d644eb4a8191a91f4c18

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